CN110764297B

CN110764297B - Rear cover module, display device and assembly method of display device

Info

Publication number: CN110764297B
Application number: CN201910995531.1A
Authority: CN
Inventors: 林志颖
Original assignee: Qisda Optronics Suzhou Co Ltd; Qisda Corp
Current assignee: Qisda Optronics Suzhou Co Ltd; Qisda Corp
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2022-10-11
Anticipated expiration: 2039-10-18
Also published as: CN110764297A

Abstract

The invention provides a rear cover module, a display device and an assembling method thereof, wherein the rear cover module is assembled on the back surface of the display module and comprises a rear cover, a sliding frame and a fixed frame which are sequentially overlapped; wherein, the rear cover comprises a first opening, the sliding frame comprises a second opening, and the fixed frame comprises a third opening; when the sliding frame slides to the first position, the second opening and the first opening are not aligned with each other, and an assembling worker can penetrate an external appliance into the first opening to lock and fix the third opening and the display module; before the product assembling procedure is finished, the sliding frame is slid to a second position, and the first opening hole and the second opening hole are aligned with each other, so that when the display device is installed on the wall hanging frame or the suspension frame, a screw provided by the wall hanging frame or the suspension frame can pass through the first opening hole and be locked on the thread of the second opening hole. The rear cover module of the invention improves the strength of the product mechanism, and does not need to add new screws to the appearance to influence the appearance.

Description

Rear cover module, display device and assembly method of display device

Technical Field

The invention relates to the technical field of display, in particular to a rear cover module, a display device with the rear cover module and an assembling method of the display device.

Background

As one of the mainstream display devices, liquid crystal display screens are widely used in display devices such as computer monitors, drawing boards, POS devices, and televisions. The main functional components of the display device include a liquid crystal display, a backlight module, a front frame, a circuit board, a power module, etc., which are usually assembled together to form a front half display module. The rear half of the display device is usually a large flat thin-shell rear cover, four edges of the rear cover structure are engaged or locked with four edges of the display module by means of snap grooves and screws, and the center area of the rear cover is usually desired to be designed for aesthetic reasons, so that the design department does not want other screws to appear on the surface of the center area of the rear cover except for wall hanging screw holes for wall hanging racks or suspension racks.

However, if the large thin shell rear cover is locked only by clamping grooves on four sides or screws and the front half part, when the wall-mounted frame is locked in a wall-mounted screw hole in the center of the rear cover, the strength of the rear cover thin shell is insufficient, so that the deformation of the whole machine is easily caused, the probability that a display module deforms to generate light spots (mura) and light leakage is increased easily, and for a drawing board and a POS machine user using a touch screen, the screen can shake due to insufficient structural rigidity when the touch screen is pressed.

If the screw is added to the central area of the thin-shell rear cover to directly lock the rear cover and the front half display module occupying the main body weight, the stress of the wall hanging frame can transmit shear flow and forward force to the display module through the screw, so that the rigidity of the whole machine is improved, and the risks of touch shaking, light leakage and the like of a light spot can be improved. The key point of the research of the invention is to lock the central area of the rear cover and the display module by screws to increase the structural strength of the body on the basis of not increasing new holes except the original wall hanging holes of the rear cover.

Disclosure of Invention

One objective of the present invention is to provide a rear cover module, which can significantly improve the structural strength of a display device after being assembled with the display module, and avoid the problems of light spot (mura) and light leakage caused by the shaking or deformation of the display device during the use process.

The second objective of the present invention is to provide a display device, which includes the rear cover module.

The present invention also provides a method for assembling a display device.

The invention discloses a rear cover module which is assembled on the back surface of a display module, and comprises a rear cover, a sliding frame and a fixed frame which are sequentially overlapped along a first direction, wherein the sliding frame is slidably clamped between the rear cover and the fixed frame, the sliding frame and the fixed frame are positioned on one side, facing the display module, of the rear cover, and the first direction is vertical to the back surface of the display module; the rear cover comprises a first opening, the sliding frame comprises a second opening, the second opening is an internal threaded hole, and the fixed frame comprises a third opening; when the sliding frame slides to a first position, the first opening is aligned with the third opening, and the first opening is not aligned with the second opening; when the sliding frame slides to a second position, the first opening and the second opening are aligned with each other, wherein the projections of the first position and the second position on the back of the display module are located at different positions.

Preferably, the fixed frame is fixed to the rear cover, and when the sliding frame is at the first position, after an external device passes through the first opening, the third opening of the fixed frame and the fourth opening of the display module are fixed to each other by a first screw, that is, the third opening is a bearing surface of the first screw, and the fourth opening is an internal threaded hole for being fixed to a thread of the first screw.

Preferably, the mobile phone further comprises an adjusting screw, the adjusting screw connects the rear cover and the sliding frame, and the sliding frame slides linearly between the first position and the second position by rotating the adjusting screw.

Preferably, the adjusting screw comprises a first end and a second end which are opposite to each other, and the second end is provided with an external thread; the rear cover comprises a first rotating hole, and the inner wall of the first rotating hole is not provided with a threaded hole so as to allow the adjusting screw rod to rotate freely; the sliding frame comprises a second rotating opening, and the second rotating opening is provided with an internal thread; the first end is arranged in the first rotating hole in a penetrating mode, and the second end is arranged in the second rotating hole in a penetrating mode; the adjusting screw is rotated to enable the first end to rotate in the first rotating opening and the second end to rotate in the second rotating opening, and the second rotating opening linearly slides along the direction of the adjusting screw away from or close to the first end to drive the sliding frame to linearly slide along the direction of the adjusting screw away from or close to the first end.

Preferably, the sliding frame is provided with an auxiliary opening, the projection of the auxiliary opening and the projection of the second opening on the back surface of the display module are located at different positions, and when the sliding frame slides to the first position, the first opening, the auxiliary opening and the third opening are aligned with each other.

The invention provides a display device, which comprises a display module and a rear cover module assembled on the back surface of the display module, wherein the rear cover module is the rear cover module.

The invention provides an assembling method of a display device, wherein the display device is the display device, and the assembling method comprises the following steps:

the method comprises the following steps of S1, providing a pre-installation module and a display module;

s2, sliding the sliding frame of the rear cover module in the pre-assembly module to a first position;

s3, locking the fixing frame of the rear cover module and the display module through the first opening;

s4, sliding the sliding frame to a second position to align the internal threads of the first opening and the second opening and then completing an assembly procedure;

wherein, the rear cover module comprises the rear cover, the sliding frame and the fixed frame which are sequentially overlapped; when the sliding frame is at the first position, the first opening of the rear cover, the third opening of the fixed frame and the fourth opening of the back of the display module are aligned with each other, pass through the first opening, and lock and fix a first screw in the third opening and the fourth opening, so that the fixed frame is fixedly connected with the display module; when the sliding frame is at the second position, the first opening is aligned with the second opening of the sliding frame, and if the display module is selected to be fixed on the wall hanging frame, a second screw attached to the wall hanging frame can pass through the first opening and be locked in the internal thread of the second opening.

Preferably, the step S2 further comprises,

and rotating the adjusting screw rod along the third direction to enable the sliding frame connected with the adjusting screw rod to slide to the first position.

Preferably, the step S4 further includes rotating an adjusting screw in a fourth direction, so that the sliding frame connected to the adjusting screw slides to the second position, and the third direction is opposite to the fourth direction.

Compared with the prior art, the rear cover module provided by the invention is combined on the back side of the display module, the rear cover module comprises a rear cover, a sliding frame and a fixed frame which are sequentially overlapped, the sliding frame slides between a first position and a second position, the fixed frame is fixedly connected with the display module by using the first opening on the rear cover twice, and the sliding frame is fixedly connected with the wall hanging frame. According to the rear cover module, no additional opening is formed in the existing rear cover, so that the foundation that the display module is fixedly connected with the rear cover is realized, and the structural strength of the whole body and the wall hanging hole is improved.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

Fig. 1 is a schematic back view of a display device according to the present invention.

Fig. 2 is a schematic structural diagram of a rear cover of the display device of the present invention.

Fig. 3 is a schematic diagram of a rear cover and a sliding frame of the display device of the invention.

Fig. 4 is an enlarged schematic view of the region a in fig. 3.

Fig. 5 is a schematic view of a rear cover module of a display device according to the present invention.

Fig. 6 is an enlarged schematic view of a region B in fig. 5.

Fig. 7 is a schematic cross-sectional view of a sliding frame of a display device according to the present invention in a first position.

Fig. 8 is an enlarged schematic view of region C in fig. 7.

Fig. 9 is a schematic cross-sectional view illustrating a fixing frame and a display module of the display device according to the present invention.

Fig. 10 is an enlarged schematic view of region D in fig. 9.

Fig. 11 is a schematic cross-sectional view of a sliding frame of a display device according to the present invention in a second position.

Fig. 12 is an enlarged schematic view of region D in fig. 11.

FIG. 13 is a flowchart illustrating an assembling method of a display device according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

FIG. 1 is a schematic rear view of a display device according to the present invention; FIG. 2 is a schematic structural diagram of a rear cover of the display device according to the present invention; FIG. 3 is a schematic diagram of a rear cover and a sliding frame of the display device according to the present invention; FIG. 4 is an enlarged schematic view of region A of FIG. 3; fig. 5 is a schematic view of a rear cover module of a display device according to the present invention, and fig. 6 is an enlarged schematic view of a region B in fig. 5.

As shown in fig. 1 to 6, the display device 100 provided by the present invention includes a display module 50 and a back cover module, wherein the back cover module is combined with the back surface of the display module 50, the back surface of the display module 50 is opposite to the display surface of the display module 50, and the display surface faces a user.

The rear cover module includes a rear cover 10, a sliding frame 20, and a fixing frame 30 sequentially stacked in a first direction, which is a direction perpendicular to the rear surface of the display module 50. The sliding frame 20 is slidably clamped between the rear cover 10 and the fixed frame 30, and the sliding frame 20 and the fixed frame 30 are respectively located on one side of the rear cover 10 facing the display module 50; wherein, the rear cover 10 is provided with a first opening hole 11; the sliding frame 20 is provided with a second opening 21 and an auxiliary opening 22, and projections of the second opening 21 and the auxiliary opening 22 on the back of the display module are located at different positions; the fixing frame 30 is provided with a third opening 31; when the sliding frame 20 is located at the first position, the first opening 11, the auxiliary opening 22 and the third opening 31 are aligned with each other; when the sliding frame 20 is at the second position, the first opening 11 and the second opening 21 correspond to each other, so that a user can use the sliding frame when installing a wall hanging rack or a suspension rack. The sliding frame 20 slides between the first position and the second position, so that the fixed frame 30 and the display module 50 are locked to each other; and the external wall hanging rack is convenient to be selected for assembling when the display device is installed, and when the external wall hanging rack is at the second position, the wall hanging rack, the rear cover and the sliding frame 20 are locked with each other. The first position and the second position are positioned at different positions in the projection on the back of the display module.

In this embodiment, the number of the first openings 11 is 4, and the first openings are disposed in the central region of the rear cover 10, and the number of the corresponding second openings 21 and the number of the corresponding third openings 31 are 4. In addition, the first hole 11, the auxiliary hole 22 and the third hole 31 are, for example, non-threaded holes, that is, the inner walls of the first hole 11, the auxiliary hole 22 and the third hole 31 are smooth surfaces; the second opening 21 is, for example, a threaded hole, i.e., an internal thread is provided on the inner wall of the second opening 21. It should be noted that the threads of the first opening 11 and the second opening 21 are aligned to form a hole conforming to the Video Electronics Standard Association (VESA) standard, or a hole according to the design requirement, and it should be noted that all the general VESA wall-hanging holes are designed to be threaded holes with closed bottoms (i.e. the second opening 21 is a threaded hole with closed bottoms), so as to avoid the user from using too long screws (hereinafter referred to as second screws) when mounting the wall-hanging rack or the suspension rack, which may cause the screws to go too far into the interior of the housing and damage the internal parts of the housing.

As shown in fig. 2 to 4, the rear cover 10 includes a first retaining wall 12 and a second retaining wall 13, the first retaining wall 12 and the second retaining wall 13 respectively protrude from the rear cover 10, wherein the sliding frame 20 is accommodated between the first retaining wall 12 and the second retaining wall 13, in this embodiment, the first retaining wall 12 and the second retaining wall 13 jointly limit the sliding of the sliding frame 20, so that the sliding frame 20 can only linearly slide in a single direction parallel to the display surface of the display module 50. In this embodiment, the 4 first openings 11 are located in a nearly central region of the rear cover 10, and when the sliding frame 20 slides in a direction limited by the first retaining wall 12 or the second retaining wall 13, the first openings 11 can be aligned with the second openings 21 of the sliding frame 20, but not limited thereto. In addition, it should be noted that the number or shape of the retaining walls is not limited in the present invention, that is, only the first retaining wall 12 or the second retaining wall 13 can be used, as long as the sliding of the sliding frame 20 is limited, so that the sliding frame 20 can only slide linearly in a single direction parallel to the display surface of the display module 50.

As shown in fig. 1, 3 and 4, the rear cover module further includes an adjusting screw 40, and the adjusting screw 40 connects the rear cover 10 and the sliding frame 20, wherein rotating the adjusting screw 40 can make the sliding frame 20 slide along a straight line between a first position and a second position, for example, move along an axial direction of the screw. In this embodiment, the first position and the second position can be defined by the first retaining wall 12 and the second retaining wall 13, that is, when the sliding frame 20 abuts against one of the first retaining wall 12 and the second retaining wall 13, the sliding frame 20 is defined to be in the first position; when the sliding frame 20 abuts against the other one of the first retaining wall 12 and the second retaining wall 13, the sliding frame 20 is defined to be in the second position. It should be noted that, in the present embodiment, the adjusting screw 40 is disposed on the back cover module for description, and the following description is also provided on the premise of this, however, in practical applications, the adjusting screw 40 is not limited to this, for example, the adjusting screw 40 is not required to be disposed on the back cover module, but is implemented by an independent component for performing similar functions, for example, an additional tool for assembly line (also referred to as the adjusting screw 40 for description) may be used, as long as the sliding frame 20 has a positioning structure to clamp the adjusting screw, and then the adjusting screw 40 is used to move the sliding frame 20 to the target position, the adjusting screw 40 may be withdrawn.

The following description is still provided with the adjusting screw disposed on the rear cover module. Specifically, the adjusting screw 40 includes a first end 41 and a second end 42 opposite to each other, the first end 41 is inserted into the first rotation opening 16 of the rear cover 10, and the second end 42 is inserted into the second rotation opening 23 of the sliding frame 20; wherein, be equipped with the external screw thread on the second end 42, be equipped with the internal thread on the inner wall of second rotation trompil 23, external screw thread and internal thread looks adaptation for second end 42 combines in the second rotates trompil 23. Further, the inner wall of the first rotational opening 16 is unthreaded, and therefore, when the first end 41 of the adjustment screw 40 is rotated in the first rotational opening 16 about the central axis of the adjustment screw 40, no relative displacement is produced between the first end 41 and the first rotational opening 16; however, since the second end 42 and the second rotation opening 23 are respectively provided with the external thread and the internal thread, when the second end 42 rotates around the central axis of the adjustment screw 40 in the second rotation opening 23, a relative displacement is generated between the second end 42 and the second rotation opening 23, that is, the second rotation opening 23 slides in a direction away from or close to the first end 41 of the adjustment screw 40, and the sliding frame 20 slides in a direction away from or close to the first end 41 of the adjustment screw 40 along with the second rotation opening 23.

Further, the first side 121 of the first retaining wall 12 and the second side 131 of the second retaining wall 13 jointly constrain the first rim of the sliding frame 20, so as to limit the axial movement of the second rotating opening 23 caused by the rotation of the adjusting screw 40 during the sliding of the sliding frame 20 along the adjusting screw 40, so that the sliding frame 20 can only slide linearly along the adjusting screw 40. The first side edge 121 and the second side edge 131 are parallel and adjacent to each other.

With reference to fig. 2 and fig. 4, the first retaining wall 12 further includes a third side 122, the second retaining wall 13 further includes a fourth side 132, the third side 122 is parallel to and adjacent to the fourth side 132, and the second frame of the sliding frame 20 can slide between the third side 122 and the fourth side 132. The third side 122 is perpendicular to the first side 121, the fourth side 132 is perpendicular to the second side 131, and the first frame is perpendicular to the second frame.

In this embodiment, the first retaining wall 12 is a substantially quadrilateral frame structure, and the second retaining wall 13 is a U-shaped structure, wherein the first side 121 and the third side 122 form a right-angle side of the frame, and the second side 131 and the fourth side 132 form another right-angle side of the U-shaped structure. Preferably, the second retaining wall 13 with U-shaped structure is disposed inside the first retaining wall 12 with frame structure. In addition, the first retaining wall 12 of the frame structure includes a plurality of notches 12a, and the notches 12a facilitate assembly of the fixing frame 30 and the rear cover 10 (as shown in fig. 6). Of course, the first retaining wall 12 and the second retaining wall 13 are not limited to the structures shown in fig. 2 and 4, and in other embodiments of the present invention, the first retaining wall and the second retaining wall may have other shapes, and the first retaining wall and the second retaining wall cooperate to limit the sliding frame from sliding between the first position and the second position.

With reference to fig. 4, the third side 122 of the first retaining wall 12 is provided with a recess 1221, the adjusting screw 40 is partially received in the recess 1221, the adjusting screw 40 can rotate in the recess 1221, the sliding frame 20 is a sheet metal frame, a bent edge 24 is formed at an edge of the stamped sheet metal frame, and the second rotating opening 23 is disposed on the bent edge 24. Wherein, the bending edge 24 is parallel to the third side 122 of the first retaining wall 12. The bent edge 24 extends from the edge of the sheet metal frame (the edge of the slide frame 20) toward the fixed frame 30.

In addition, the second end 42 of the adjusting screw 40 is provided with a stop member 43, preferably, the stop member 43 is sandwiched between the third side 122 of the first wall 12 and the bending edge 24 of the sliding frame 20, or the stop member 43 is sandwiched between the first wall 12 and the second rotation opening 23 of the sliding frame 20. The stopper 43 is used to prevent the adjustment screw 40 from moving in the axial direction when the adjustment screw 40 is rotated by the assembling person. The stop 43 may be an E-shaped or C-shaped washer commonly used in machine parts, but is not limited thereto.

In this embodiment, the adjusting screw 40 can be regarded as a long screw as a whole, the front end (corresponding to the second end 42) of the long screw is provided with an external thread, and the rear end (corresponding to the first end 41) of the long screw is inserted into the first rotating hole 16.

In addition, in a preferred embodiment, the rear cover module further has a pre-limiting mechanism, so that the adjusting screw 40 cannot freely move in the axial direction while connecting the rear cover 10 and the sliding frame 20, so as to avoid the situation that the adjusting screw extends into the machine body too much to damage components, and the adjusting screw cannot be pulled out of the machine body, and only drives the sliding frame 12 to move in the linear direction under the action of an external force (for example, when the adjusting screw 40 is rotated). For example, as shown in fig. 3 and 4, the screw head bearing surface of the adjusting screw 40 abuts against the first rotation opening 16, and an E-shaped gasket or a C-shaped gasket is disposed at the other end, i.e. near the second end 42, as a stop 43, and the stop 43 abuts against the third side 122 of the first retaining wall 12 so that it cannot be pulled out of the machine body.

As shown in fig. 4, the number of the second openings 21 and the number of the auxiliary openings 22 are 4, and the 4 second openings 21 and the 4 auxiliary openings 22 are respectively distributed at four corners of the sliding frame 20, where the sliding frame 20 is, for example, a quadrilateral frame structure; wherein each second opening 21 is disposed adjacent to each auxiliary opening 22. In addition, the auxiliary opening 22 can be used to pre-accommodate the first fixing member 60 (as shown in fig. 8).

As shown in fig. 5 and 6, the fixing frame 30 of the rear cover module is stacked on the sliding frame 20, and the fixing frame 30 is fixedly connected to the rear cover 10. After the rear cover module and the display module 50 are assembled, the fixing frame 30 and the display module 50 are fixedly connected by the first fixing member 60 (as shown in fig. 10).

The fixing frame 30 is provided with at least one first fixing hole (not shown), the rear cover 10 is correspondingly provided with at least one second fixing hole 15 (as shown in fig. 2), and the bolt 35 is inserted into the first fixing hole and the second fixing hole 15 to lock the fixing frame 30 to the rear cover 10. The at least one first fixing hole and the at least one second fixing hole 15 are in one-to-one correspondence, and the second fixing holes 15 are threaded holes.

The fixing frame 30 further includes a plurality of extending portions 33, and the plurality of extending portions 33 enter the plurality of notches 12a formed in the first retaining wall 12, so that the first frame 12 can limit the fixing frame 30, and the convenience of assembling the fixing frame 30 and the rear cover 10 is improved. The extending portion 33 enters the notch 12a, so that the first fixing hole and the second fixing hole 15 are aligned quickly.

In this embodiment, the fixed frame 30 is, for example, a sheet metal frame, the edge of the stamped sheet metal frame forms a folding structure 32, the folding structure 32 protrudes out of the edge and extends toward the display module 50, and the third opening 31 is disposed on the folding structure 32. When the sliding frame 20 is slid to the first position, the third opening 31 is aligned with the auxiliary opening 22 and the first opening 11; when the sliding frame 20 is slid to the second position, the first opening 11, the second opening 21 and the third opening 31 are aligned.

In order to clearly understand the process of assembling the rear cover module and the display module 50 together, the following detailed description will be made with reference to fig. 7 to 12 of the drawings. Fig. 7 is a schematic cross-sectional view of a sliding frame of a display device according to the present invention in a first position; FIG. 8 is an enlarged schematic view of region C of FIG. 7; FIG. 9 is a schematic cross-sectional view illustrating a fixing frame and a display module of the display device according to the present invention; FIG. 10 is an enlarged schematic view of region D of FIG. 9; FIG. 11 is a schematic cross-sectional view of a sliding frame of a display device according to the present invention in a second position; fig. 12 is an enlarged schematic view of region D in fig. 11.

As shown in fig. 7 to 10, the back surface of the display module 50 has a protruding fourth opening 51, and the fourth opening 51 extends toward the back cover module, wherein the fourth opening 51 is, for example, a threaded hole.

When the rear cover module and the display module 50 are assembled with each other, the fourth opening 51 is aligned with the third opening 31 of the fixing frame 30 in the rear cover module. The adjusting screw 40 is rotated in the third direction, so that the sliding frame 20 slides to the first position, at this time, the auxiliary opening 22 on the sliding frame 20 is located between the third opening 31 and the first opening 11, the auxiliary opening 22 and the third opening 31 are aligned in sequence.

In this embodiment, the first screw 60 is disposed in the auxiliary opening 22 in advance. The first screw 60 includes a threaded portion 62 and a screw head 61. When assembling, firstly, the screwdriver passes through the first opening 11 and enters the auxiliary opening 22, and the front end of the screwdriver is combined with the screw head 61; secondly, the threaded portion 62 is pushed through the third opening 31 into the fourth opening 51; then, the screw portion 62 is screwed into the fourth opening 51, and at this time, the screw head 61 presses against the upper side of the turnover structure 32 of the fixed frame 30, so as to fix the fixed frame 30 and the display module 50 to each other; that is, the third opening is a bearing surface of the first screw, and the fourth opening is an internal threaded hole capable of being locked with the thread of the first screw. Wherein, the first screw 60 pre-installed in the auxiliary opening 22 and the back cover module are defined to form a pre-installed module; the preassembled module is assembled with the display module 50, and the first screw 60 is fastened to the fixing frame 30 and the display module 50. In the above-mentioned back cover module, the central region of the back cover 10 is fixedly connected with the fixed frame 30 in advance, and then the display module 50 is fixedly connected with the fixed frame 30 in the central region of the back cover 10, compared with the way that the edge of the display module 50 and the edge region of the back cover 10 are mutually clamped in the prior art, the mutual locking of the fixed frame 30 and the central region of the display module 50 significantly improves the strength of the central region of the back cover 10, after the back cover module is fixedly connected with the display module 50, the stress of the first opening 11 can be transmitted to the fourth opening 51 (threaded hole) of the display module in a shorter distance, and the whole structure of the whole display device is enhanced, and the problems of light spots (mura) and light leakage caused by the overweight of the whole structure and deformation of the body are not easy to occur in use.

In addition, if the screw head diameter of the first screw selected for use is greater than that of the first hole, the first screw 60 may be pre-set in the auxiliary hole 22, and after all the components of the rear cover module are assembled, the first screw preset in the module is locked by penetrating the first hole 11 with an external tool after the rear cover is covered.

In other embodiments of the present invention, if the screw head diameter of the first screw is smaller than the first opening 11, the first screw may not be disposed in the auxiliary opening of the sliding frame in advance. During the equipment, the double-screw bolt of screw passes first trompil, supplementary trompil and third trompil in proper order, and the lock is fixed in the dorsal fourth trompil of display module assembly.

It should be noted that, in the above embodiment, the auxiliary opening 22 is not a requirement of the present invention, and the design consideration is to satisfy the requirement of the first screw for increasing the thread size. In general, the first screw with larger thread size can increase the strength, but the diameter of the screw head of the first screw is larger than the size of the first opening, so that the first screw needs to be preset in the rear cover module, and thus a part of the first screw is preset in the auxiliary opening 22. If according to actual need, the first screw chooses for use a bit for use, then can just put into first screw in order to lock solid from first trompil after covering the back lid, supplementary trompil can play and avoid first screw to fall into in the back lid module because of error when the equipment this moment. In summary, the auxiliary opening 22 can be omitted as long as the first screw can fix the frame and the display module.

That is, the slide frame of the present invention may be provided with only the second opening (the internal threaded hole) to be engaged with the first opening of the rear cover and the third opening of the fixed frame. When the sliding frame slides to a first position, the first opening and the third opening are aligned with each other, and the first opening and the second opening are not aligned; when the sliding frame slides to a second position, the first opening and the second opening are aligned with each other, wherein the projections of the first position and the second position on the back of the display module are located at different positions.

As shown in fig. 11 to 12, after the assembly of the fixed frame 30 and the display module 50 on the back side of the rear cover module is completed, the adjusting screw 40 is continuously rotated in the fourth direction, so that the sliding frame 20 slides from the first position to the second position, and when the sliding frame 20 slides to the second position, the first opening 11 and the second opening 21 are aligned with each other, at this time, the assembly procedure is completed. If the user chooses to use the wall hanger (conventional iron) to fix the display unit after purchase, a second screw (not shown) provided on the wall hanger may be used, the second screw including a second stud having an external thread and a second screw head at an end of the second stud. During assembly, the front end of the screwdriver is combined with the second nut to push the second stud to pass through the opening of the wall-hanging rack, then pass through the first opening 11 and enter the second opening 21, and the second screw is screwed in the second opening 21, so that the wall-hanging rack, the sliding frame 20 and the rear cover 10 are fixedly connected. The third direction is opposite to the fourth direction.

As can be seen from fig. 7 to 12 and the above description, in the process of fixing and assembling the back cover module and the back side of the display module 50, the first opening 11 on the back cover 10 is used twice, the first opening 11 is used for the first time to fixedly connect the fixed frame 30 and the back side of the display module 50, and the first opening 11 is used for the second time to fixedly connect the wall hanger, the sliding frame 20 and the back cover 10, so that the fixed connection between the back cover and the display module is realized without adding a new fixing opening on the existing back cover 10, and the connection strength between the back cover and the display module is improved, thereby overcoming the problems of light spot (mura) and light leakage caused by the shaking of the machine and the deformation of the display screen body when a user touches the display screen.

As shown in fig. 1, the present invention also provides a display device 100 including the back cover module as described above.

In addition, as shown in fig. 13, the present invention further provides an assembling method of a display device, where the display device 100 includes a pre-assembled module and a display module to be assembled, and the assembling method at least includes the following steps:

step S1, providing a pre-installation module and a display module;

s2, sliding a sliding frame of a rear cover module in the pre-installed module to a first position;

s3, locking a fixing frame of a rear cover module in the pre-installed module and the display module;

s4, sliding a sliding frame of a rear cover module in the pre-installed module to a second position;

when the sliding frame 20 is at the first position, the first opening 11 of the rear cover 10, the third opening 30 of the fixed frame 30 and the fourth opening at the back of the display module 50 are aligned with each other, and a first screw 60 is fastened in the third opening and the fourth opening through the first opening 11 to fixedly connect the fixed frame 30 and the display module 50; when the sliding frame 20 is at the second position, the first opening 11 is aligned with the second opening 21 of the sliding frame 20, and the whole assembly is completed.

If the user selects to fix the display module on the wall hanging rack or the suspension rack, after the assembly, a second screw attached to the wall hanging rack or the suspension rack passes through the first opening and is locked in the internal thread of the second opening.

In the above assembling method, the sliding frame 20 is slid to the first position or the second position by rotating the adjusting screw 40. The locking of the fixed frame 30 and the display module 50 is realized by first screws 60, and the locking of the sliding frame 20, the rear cover 10 and the wall mount is realized by second screws configured on the wall mount (used when using the wall mount or hanging the display device), wherein the first holes on the rear cover 10 are respectively used in the two locking processes. That is, the first opening 11 of the rear cover 10 is used twice in the assembly method of the present invention, so that the fixing frame of the rear cover module and the display module 50 are fixedly connected without adding a new opening to the existing rear cover, and meanwhile, the fixing frame 30 of the central region of the rear cover 10 improves the connection strength between the rear cover 10 and the display module 50.

In summary, the rear cover module provided by the present invention is combined on the back side of the display module, and the rear cover module includes a rear cover, a sliding frame and a fixing frame which are sequentially stacked, wherein the sliding frame slides between the first position and the second position, and the fixing frame is fixedly connected to the display module by using the first opening on the rear cover twice, and the sliding frame, the rear cover and the selected wall mount are fixedly connected to each other. According to the rear cover module, no opening is newly added on the existing rear cover, so that on one hand, the display module is fixedly connected with the rear cover, on the other hand, the connection strength between the rear cover and the display module is improved, and the problems of light spots (mura) and light leakage caused by shaking of a machine table and deformation of a machine body when a user touches the display device are solved.

The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a back lid module, its equipment is in display module's back, its characterized in that:

the rear cover module comprises a rear cover, a sliding frame and a fixed frame which are sequentially overlapped along a first direction, the sliding frame is slidably clamped between the rear cover and the fixed frame, the sliding frame and the fixed frame are positioned on one side, facing the display module, of the rear cover, and the first direction is perpendicular to the back surface of the display module;

the rear cover comprises a first opening, the sliding frame comprises a second opening, the second opening is an internal threaded hole, and the fixed frame comprises a third opening; when the sliding frame slides to a first position, the first opening and the third opening are aligned with each other, and the first opening and the second opening are not aligned; when the sliding frame slides to a second position, the first opening and the second opening are aligned with each other, wherein the projections of the first position and the second position on the back of the display module are located at different positions; the fixing frame is fixed on the rear cover, and when the sliding frame is at the first position, an external appliance passes through the first opening, and the third opening of the fixing frame and the fourth opening of the display module are mutually locked by a first screw.

2. The rear cover module as claimed in claim 1, wherein the third opening is a bearing surface of the first screw, and the fourth opening is an internally threaded hole for locking with the threads of the first screw.

3. The rear cover module as set forth in claim 1, further comprising an adjustment screw connecting the rear cover and the sliding frame, wherein rotation of the adjustment screw causes the sliding frame to slide linearly between the first position and the second position.

4. The rear cover module as set forth in claim 3, wherein the adjustment screw includes opposite first and second ends, the second end being externally threaded; the rear cover comprises a first rotating hole, and the inner wall of the first rotating hole is not provided with a threaded hole so as to allow the adjusting screw rod to freely rotate; the sliding frame comprises a second rotating opening, and the second rotating opening is provided with an internal thread; the first end is arranged in the first rotating hole in a penetrating mode, and the second end is arranged in the second rotating hole in a penetrating mode; the adjusting screw is rotated to enable the first end to rotate in the first rotating opening and the second end to rotate in the second rotating opening, and the second rotating opening linearly slides along the direction of the adjusting screw away from or close to the first end to drive the sliding frame to linearly slide along the direction of the adjusting screw away from or close to the first end.

5. The rear cover module as claimed in claim 1, wherein the sliding frame is provided with an auxiliary opening, the projection of the auxiliary opening and the projection of the second opening on the rear surface of the display module are located at different positions, and when the sliding frame slides to the first position, the first opening, the auxiliary opening and the third opening are aligned with each other.

6. A display device, comprising a display module and a rear cover module assembled on the back of the display module, wherein the rear cover module is the rear cover module according to any one of claims 1 to 5.

7. A method of assembling a display device as claimed in claim 6, the method comprising:

step S1, providing a pre-installation module and a display module;

s3, locking the fixed frame of the rear cover module and the display module through the first opening;

8. The assembly method of claim 7, wherein the step S2 further comprises,

9. The assembly method of claim 8, wherein the step S4 further comprises,

rotating an adjusting screw in a fourth direction, so that the sliding frame connected with the adjusting screw slides to the second position, wherein the third direction is opposite to the fourth direction.